21221100

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1$

素因数の和:129

約数の個数: 216

約数和(自身を含む): 75151440

約数和(自身を除く): 53930340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 19, 20, 25, 30, 34, 36, 38, 45, 50, 51, 57, 60, 68, 73, 75, 76, 85, 90, 95, 100, 102, 114, 146, 150, 153, 170, 171, 180, 190, 204, 219, 225, 228, 255, 285, 292, 300, 306, 323, 340, 342, 365, 380, 425, 438, 450, 475, 510, 570, 612, 646, 657, 684, 730, 765, 850, 855, 876, 900, 950, 969, 1020, 1095, 1140, 1241, 1275, 1292, 1314, 1387, 1425, 1460, 1530, 1615, 1700, 1710, 1825, 1900, 1938, 2190, 2482, 2550, 2628, 2774, 2850, 2907, 3060, 3230, 3285, 3420, 3650, 3723, 3825, 3876, 4161, 4275, 4380, 4845, 4964, 5100, 5475, 5548, 5700, 5814, 6205, 6460, 6570, 6935, 7300, 7446, 7650, 8075, 8322, 8550, 9690, 10950, 11169, 11628, 12410, 12483, 13140, 13870, 14535, 14892, 15300, 16150, 16425, 16644, 17100, 18615, 19380, 20805, 21900, 22338, 23579, 24225, 24820, 24966, 27740, 29070, 31025, 32300, 32850, 34675, 37230, 41610, 44676, 47158, 48450, 49932, 55845, 58140, 62050, 62415, 65700, 69350, 70737, 72675, 74460, 83220, 93075, 94316, 96900, 104025, 111690, 117895, 124100, 124830, 138700, 141474, 145350, 186150, 208050, 212211, 223380, 235790, 249660, 279225, 282948, 290700, 312075, 353685, 372300, 416100, 424422, 471580, 558450, 589475, 624150, 707370, 848844, 1061055, 1116900, 1178950, 1248300, 1414740, 1768425, 2122110, 2357900, 3536850, 4244220, 5305275, 7073700, 10610550, 21221100]

約数ペア:

[(1, 21221100), (2, 10610550), (3, 7073700), (4, 5305275), (5, 4244220), (6, 3536850), (9, 2357900), (10, 2122110), (12, 1768425), (15, 1414740), (17, 1248300), (18, 1178950), (19, 1116900), (20, 1061055), (25, 848844), (30, 707370), (34, 624150), (36, 589475), (38, 558450), (45, 471580), (50, 424422), (51, 416100), (57, 372300), (60, 353685), (68, 312075), (73, 290700), (75, 282948), (76, 279225), (85, 249660), (90, 235790), (95, 223380), (100, 212211), (102, 208050), (114, 186150), (146, 145350), (150, 141474), (153, 138700), (170, 124830), (171, 124100), (180, 117895), (190, 111690), (204, 104025), (219, 96900), (225, 94316), (228, 93075), (255, 83220), (285, 74460), (292, 72675), (300, 70737), (306, 69350), (323, 65700), (340, 62415), (342, 62050), (365, 58140), (380, 55845), (425, 49932), (438, 48450), (450, 47158), (475, 44676), (510, 41610), (570, 37230), (612, 34675), (646, 32850), (657, 32300), (684, 31025), (730, 29070), (765, 27740), (850, 24966), (855, 24820), (876, 24225), (900, 23579), (950, 22338), (969, 21900), (1020, 20805), (1095, 19380), (1140, 18615), (1241, 17100), (1275, 16644), (1292, 16425), (1314, 16150), (1387, 15300), (1425, 14892), (1460, 14535), (1530, 13870), (1615, 13140), (1700, 12483), (1710, 12410), (1825, 11628), (1900, 11169), (1938, 10950), (2190, 9690), (2482, 8550), (2550, 8322), (2628, 8075), (2774, 7650), (2850, 7446), (2907, 7300), (3060, 6935), (3230, 6570), (3285, 6460), (3420, 6205), (3650, 5814), (3723, 5700), (3825, 5548), (3876, 5475), (4161, 5100), (4275, 4964), (4380, 4845)]